Howabb h



H. H. CARPENTER.

REFRIGEHATION APPARATUS.

APPLICATION FILED DEC. I, I9I6.

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Inventar; award 77. Czrpener/ lill I-IOWA H. CARPENTER, QF ALTADENA, CALJEFOENIA.

, REFEIGERATUN APPL. t;

application ledl December i TQ all whom it may concern:

Be it known that l, HOWARD H. CARPEN- TER, a citizen of the United States, residing at Alta-dona, in tliecounty of Los Angeles and State of California, have 'inventednew cipal objects of the invention is to provide a refrigerating apparatus by means of which articles placed in a suitable box-like casing, such as an ordinary refrigerator, may be eliiciently cooled, and to that end, a refrigerating chamberis provided within such refrigerator box or casing while the condenser and other features of the system may be disposed externally o such boX, communication as between the refrigerating chamber and the condenser or other features being had through a hollow shalt which passes through a wall of the refrigerator box and through which the duid refrigerant may be circulated. A further'object of the invention is to provide rotary refrigerating apparatus in which the refrigerant, as for instance sulfur dioXid may be eiiectively separated from the oil and other fluids employed in such apparatus, and l have found that such separation may be made centrifugally.

ln accordance with the invention, a refrigerating apparatus is provided which may be applied to any air-cooled refrigerator, or the same may enter structurally into the organization oi a refrigerator.

rlheinvention has for a further object to provide apparatus of the general character stated which will be relatively simple and inexpensive in construction and organization, when its high eciency and compactness in size are considered, and which will be generally superior in reliability and serviceability.

With the above and other objects in view, the invention consists in the novel anduseful provision, formation, combination, `association and relative arrangement of parts, members anfdlfeatures, all as hereafter described, shown in the drawing, and finally pointed out in claims.

.ln the drawing;

`pccication oi Letters Patent.

TUS.

Patented Sept, 119th.

, 1916. Serial No. 1342,39;

-Figure 1 is a central longitudinal sectional view of refrigerating apparatus constructed, organized and applied in accordance with the invention; and F ig. 2 is a fragmentary sectional view taken on the line a02-x2, Fig. l, and looking in the direction of the appended arrows, showing'certain details of construction.

Corresponding parts in all the gures are designated by the same reference characters.

Referring with particularity to-'the drawing, in the embodiment of'the invention therein shown, A. designates a-rotary condenser, B designates a rotary refrigerator, C designates a refrigeration box or the like in which the rotary refrigerator B is preferably located, A designates lubricant and refrigerant separation means for use in connection with the condenser A., B designates lubricant and refrigerant separation means at the refrigerator B, D designates a brine chamber used in connection with the refrigerator, and E designates cooling water supply means for the condenser.

The rotary condenser A. is shown as comprising a compressor a', a rotatable shell 3 in which said compressor is located, air supply nieans f whereby the rotary condenser is f cooled. and means g whereby compressor elements may be prevented from rotating with the shell E and other compressor features. The compressor a is shown as comprising a rotatable cylinder member e, a plurality oi? pistons one of which is shown at 5, means 6 ior actuating said pistons 5, and the means gfor preventing rotation of the actuating means 6 with the cylinder member d., rl`he cylinder member i is united with the rotatable shell 3 as at 7, and such cylinder niember is of the type in which three radially disposed cylinders are employed, such cylinders being disposed Mdo apart about the axis of rotation of the rotary compressor. @nly one of such cylinders is shown at d, the construction ot' the remaining cylinders beingq readily understood from a description of the cylinder 4;". rlhe cylinder Il is formed in the casting constituting the cylinder member 4i and has an :inwardly` lacinga bore?, and a head 9 closing the outer end ot the cylinder. A. reilrigerantiintake duct l0 is formed in the cylindercasting and leads to an intake por-t il provided in the wall of the cylinder a and near the head thereof and controlled by s Slide valve 12. a. slide Siti lith

rie

. vided for the shaft in a suitable supportp municates with a duct 1()a provided in.t

shaft 15 u on which the cylinder casting'is mounted or rotation, such casting being secured to the shaft 15, as is the rotatable refrigerator member B. The shaft 15 eX- tends through a wall 16 of the refrigerator box C, anti-friction bearings 17 being proing bushing 18 inset in an orifice 19 inthe wall 16. The rotating parts of the entire apparatus are preferably supported from the bushing 18, and such lbushing 18 may have an internal Chamber 20 .adapt-ed to be 'illed with heat insilating substance. A piston 5 is itted in each'of the cylinders and connected with the piston actuating means 6, shown as an eccentric, by means of a connecting rod 22 having a ball and socket joint in the piston asat 22, a .retaining ring 22b being provided to retain a plug 22c having a suitable hemispherical cavity provided internally of the piston to hold the piston and the connecting rod 22 in assemblage. The opposite end of the rod 22, in each instance, terminates in an eccentric stra 22d encirclin the eccentric 6. An eccentric rod 23 exten s to each of rthe slide valves 12 and each such eccentric rod 23 encircles the eccentric 6 and extends to the slide valve to a pivotal connection 23a thereon.I The eccentric 6 is formed on a hollow shaft 6a journaledin the cylinder member a as at 6b and at an members 3 and 3 rigidly secured to the shaft 15 at its point of emergence from the refrigerating box C as by welding an annular outwardly facing portion 24 provided on the shell portion 3 to such shaft 15 and 'then applying a brazed or welded annulus 25 over the annular portion 24 'to further secure the same. The opposite shell portion 3, is secured at its axis 'to an extension shaft 15'L coaxial with the shaft 15 as by riveting the shell to a lateral extension 15b of the shaft 15a as atl 15C. The hemispherical shells 3 and 3" are outwardly flared at their meeting edges where 'they are provided with laterally extending matched anges 26. These lian es are welded together and a two-part camping ring 29 is fitted over the flanges 26l1 and 27l after the welding of the same, the parts of the clamping rind 29 beingheld in assemblage by means o bolts or the like 30 passed therethrough. 7The shell 'portions 3 and 3 are provided, respectively, with external fins or blades 31 and 32, such blades ranging from a point a slight distance from the axis of rotation of the shell as at 31u and 32 to the point of merger of the two shells where such fins are extended to form peripheral fan blades 31b 'and 32". Side flanges 33 and 34 are provided to act as supports for the fan blades 33 and 34 and further to provide for more etlicient fan orblower action. A .fixed casing of sheet metal or the like 35 surrounds the shell 3 and the fan blades and Iins thereon and provides a fan casing 'for the fins, such casing terminating at the points of termination ot the fins at 31a and 32a. The easing further extends 'upwardly to an air discharge duct 36, and downwardly to form a water well 37 adapted to receive cooling water. A plurality of oppositely arranged battles 36a and 36b are provided in lthe discharge duct or passage 36 so that discharged air must take a tortuous course and deposit any liquid contained therein on the baiies from where it may be returned to the water well 37. The arrangement of casing, tins, and fan blades, just described, constitutes the means f. In the lowermost portion of the well 37 the casingis formed into a water receiving chamber 38 connected by a duct 39 shown in dotted lines in Fig. 1, with the interior of the well 37, the outlet 39a of the'duct 39 being controlled by a valve 40 operated by a float 40a pivotally connected as at 40 with a wall of the chamber 38 and pivotally connected with the valve as at 40C. A pump 41 enters the water in an extension 38n of the water chamber 38 and is arranged to be driven by means of friction disks 42 and 43 provided respectively on the shaft 38b ot' 'the pump and on the extension shaft 15. The pump is arranged to deliver water lthrough a divided conduit 44 one of the branches 44a of which leads 'to the oriiice 35 provided in the casing 35 near the axis of rotation of the rotary condenser, and the other branch 44b of which leads to a similar orifice 35b provided at the opposite side of the rotary condenser and near the axis of rotation thereof, such' branch pipes being arranged to discharge water into the space between the shell 3 and the casing 35. This erant and lubricant in the condenser cham-- ber are organized as follows: A member 45 of annular form and groove or channel section is mounted tor rotation with the shell 3 and the compressor cylinder member ay and is disposed within the inwardly 'facing groove 46 in the shell 3 provided by the llared edges 36. and 37, though such member 45 with its inwardly facing groove, is of slightly less diameter than the groove 46 the bottoms of the grooves being spaced apart. Bridges 47 are provided transversely of the groove 46 and ducts 48 are arranged at intervals about the circumference of the member 45 to extend into the groove 46 nearly to the bottom or portion of greatest diameter thereof. A vcombined refrigerant and lubricant receiving reservoir 49 is provided at the upper portion of theY Weight 6d and such reservoir is closed save fora plurallty of tubes 50 and 51 Which communicate therewith, the tube 51 extending nearly to the bottorn of the reservoir and the tube l50 which surrounds the tube 5.1 terminating at one end at the top of the reservoir as at 50. The outer end of the tube 50 which is mounted on the reservoir casing extends radlally upward and terminates in a plurality of scoops or fingers 50b and 5()c which are arranged to just enter the vgroove 46. The tube 51, which ranges through the tube 50, is extended slightly further upward than the fingers 50b and 50. and extends into the groove'45 provided in the channel member 45 as at 50b the bifurcated end of the tube 50 straddling the member 45. A duct 52 is provided in the shaft 6a and extends into the Weight 6d as at 52a where communication 1s hadvvith the interior of the reservolr 49 and only at the vbot-tom thereof, the duct 52 terI ,the shaft 15 near the condenser end thereof.

Packing means 53 may be provided at this point as the shafts 6d and the shaft 15 are l here arranged in end to end relation, the

the Weight 6d.

shaft 15 being arranged for rotation, and the shaft 6a being held against rotation by A refrigerant duct 54 extends through the hollow shaft 15 parallel to or in the duct 10a and such duct 54 communicates at one end with the chamber52c and ranges through refrigerator features as will presently be described.

The rotary refrigerator member B which is shown as disposed interiorly of the box C comprises a conical shell 55 mounted upon =an` end plate 46 which plate is provided with ahub 46a secured to the shaft 15 as at 4.6, a :refrigerant-reservoir 56 formed in a casing 57 provided interiorly of the shell 55, an expansion chamber 58 provided in an extension of the shell 55 and in the brine chamber D,

and means b for controlling the discharge.

of refrigerant from the refrigerant charnber 56 into the expansion chamber 58. The

shell is preferably of spun metal andmav have a closure welded thereto as at 55b and further secured by a ring 55c applied over the joint and such closure may extend inwardly and over the hub 46 and be applied to the shaft by welding as at 55, a retaining ring 55e being applied over the annular portion of the closure 551`Where it is applied to the shaft. The conical shell 55 is constricted at 59 to produce a neck through Which the expansion chamber 58 communicates with the further expansion chamber 60 formed within the shell 55, the expansion chamber 58 being preferably formed 1ntegrally with the shell 55. Interiorly of the shell 55 a plurality of internal ribs 61 are provided and other longitudinal ribs 62 may intersect the ribs 61. At the point oflargest diameter of the shell 55 a plurality of spaced vanes or fan blades 62 are provided and such fans are adapted for rotation with 'formed to conduct air inducted by the fan blades at the air inlet orifice and at the aperture 15 to a discharge duct 63 which may lead to any suitable point in the refrigerator box C. rlhe casing 57 provided interiorly of theA shell 55 terminates at the expansion chamber in the nozzle 64 provided With refrigerant ducts 65 extending from the chamber to the expansion chamber and into the expansion chamber 58 where an orice 66 is provided in the nozzle. 64, such orilice being controlled by a needle valve 67, and at the other end the casing is laterally extended to provide a diaphragm chamber 68 which is spanned by a diaphragm 69 secured to the casing as at 70. A bracket 71 springs from the diaphragm 69 interiorly of the chamber 56 Within the casing 57 anda bent lever 72 is pivotally secured to the bracket 7l as at 7 3, a float 74 being provided at one end of the lever 72 and a needle valve controlling link 75 being pivotally secured to the other end of the lever 72 as at 76. The needle valve 67 is formed with a head 67a and such valve is passed through an orifice provided in a laterally extending portion 75" of the link 75.4

crank arm is disposed in the path of travel -of a portlon 72a of t-he lever 72.

A fiat spring 77 1s provided between the Weight 76 and thewall of the casing 57 and such spring may be secured as by rivetingat 77a, the

spring tending to urge the Weight toward the axis of rotation.` A circular disk 78 surrounds the stem of the valve 67 and is disposed near the nozzle end of the chamber 56, a slight interspace being provided at 78a between the disk and the circular Walls of the chamber 56, and a slight interspace 78b is provided between the end wall of they chamber adjacent the nozzle and the circular disk 78. The nozzle 64`is joined to the shell 55 by a spider at 79.

The separation means b comprises a member 80 rotatably mounted upon -a hollow arbor 81 springing from the hub 46a of the end plate 46, and a drain tube 82 provided in a circular chamber 83 formed in the hub 46a. The drain tube 82 is of U-form and has its longest leg 82a disposed in thechamber 83 and its short leg 82 extending through a wall 83EL of the chamber so asv to return refrigerant to the interior of the shell 55. The chamber 83 communicates with the duct 10a in the shaft 15 and likewise come municates with the interior of the' shell 55 through a duct 84 extending centrally through the extension 81.` The member 80 comprises a central hub 80, a weight 80b depending from such hub, and an upstanding linger 80c provided .with a duct 80r1 extending t0 the highest point in the chamber 60 within the shell 55 and the head plate 46 as at 80", vsuch duct extending from this pointthrough the finger 80c and through the duct 84 in the extension 81 and being curved downwardly in the chamber 88 for a short distance only as at 80.

The brine chamber D is shown as comprising a suitable tank 85 disposed at the nozzle 64 and through an orilce'86 in which the neck 59 of the shell 55 extends so as to position the expansion chamberl 58 within the brine tank 85. A. flange 87 surrounds the neck 59 and is arranged to be rotated therewith to prevent the loss of brine v through the orifice where the neck enters the brine tank, a wall 88 of a trough'89 being arranged to lie adjacent to the-flange 87 The trough 89 is provided with a duct 90 at its bottom portion, such duct ranging to a point adjacent the bottom of the brine tank as at 91. An annular flange 92 is provided.

-On the expansion chamber 58 in the plane of rotation thereof and such flange 92 dips into the brine in the trough 89 and in the rotation 0f theexpansion chamber circulates such brine, brine being drawn into the trough through the duct 90 and lifted by the circular ange 92.

The operation, method of use and advantages of the invention will be readily understood from the foregoing description` taken in connection with the accompanying drawin and the following statement:

-ower being applied to the shaft extension 15a, the shell 3 with the cylinder member a secured thereto will be rotated and power will be transmitted through the shaft 15 to the. rotary refrigerator B and rotate the shell 55"and other features thereof. The circulatory system within the refrigerator apparatus being 'filled with lubricant and refrigerant such for instance as sulfur dioxid, the rotation of thecylinder member will cause the reciprocation of the pistons 5 in their respective cylinders 4, due to the maintenance of the eccentric 6 in vertical position by means of the weight 6d which is sufficiently heavy to provide for the desired degree of compression in the cylinders, and on the instrolre of each piston as it with its cylinder is drawn under the eccentric, refrigerant will be inducted from the refrigerator B through the duct l()a in the shaft 15 through the passage 10 and into the respective cylinder in position to receive such refrigerant, the slide valve of the respective cylinder uncovering its intake port. As the cylinder member a is further rotated, a cylinder containing a charge of the refrigerant will be brought to vertical position, and the eccentric fi acting through the respective connecting rod 22 will have expelled the refrigerant from the respective cylinder, the slide valve being then in position. to permit the transfer of the compressed refrigerant through the duct 13 and port 14 to the interior of the shell 3. As the refrigerant has intermixed therewith a sufficient quantity of lubricating oil to maintain'the parts 1n proper working condition, lubricating oil will likewise be inducted into the cylinder and expelled therefrom with the lubricant and as such refrigerant and internrixed lubricating oil comes in contact with the vshell 3 it will due to gravitation seek the lowermost point in such shell and find the groove 46. As the now liquid refrigerant and intermixed lubricant finds its way to the groove 46 is will follow the shell in its rotation due to the provision of the bridges 47 and friction-al contact with the sides of the grooves 46. The rotation of the shell will cause a separation of the lubricant and the refrigerant, after the manner of a centrifuge, the refrigerant being, in the case of sulfur dioXid, of considerably greater weight (when in liquid form) than the lubricant, and such sulfur dioXid refrigerant will find its way to the bottom of the groove 46 and will issue through the ducts 48 into the groove formed in the V-shaped or channel section member 45, leaving the lighter lubricant at the surface or disposed in an annular body at the innermost portions of the groove 46 and at the sides of the channelsection member 45. The sulfur dioxd being so separated from the lubricant, which is preferably a good grade of lubricating oil, may be picked up by the scoop or finger 50 as the annular body of such liquid refrigerant is propelled with the shell and is presented to the finger 50", which finger it will be understood, is always maintained i vertical position, due to the influence of thx;i weight 6d which is suspended below the ax's of rotation of the rotary condenser or the shell and cylinder features thereof. The liquid refrigerant gravitating through the tube 51 which terminates in the finger 50", enters the well or reservoir 49 which, as before stated,`is a combined liquid refrigerant lll inlener and lubricant reservoir yand as the tube l leads to the bottoni of such reservoir 4:9, the bottom olf-such reservoir will always be supplied with liquid refrigerant during the operation of the apparatus or oil which is disposed atboth sides of the channel-section member l5l will be picked up by the lingers 4or scoops 50h and 50c of the tube 501 and as such Fingers are not of as great a radial extension as the finger orscoop 50", they will only pick up oil and not penetrate the groove 4&6 to a suflicient depth to scoop or pick up liquid sulfur dioxid, and the oil or other lubricant so gathered b f the lino'ers 50e and 50h which. are-branches n b5 of the pipe 50, will he conveyed by such pipe 50 to the upper portion of the combined Ell dll

elli

lubricant and liquid refrigerant receiving reservoir. Due to the great difference in specific gravity of the lubricant and sulfur dioxid or other refrigerant, in its liquid forni, further separation by gravity takes place, and such liquid sulfur (lioxid as may still remain interinined `with the oil delivered to the reservoir 49 will find its way to the bottom portion of the reservoir 49. The ideal line of separation between the oil and the liquid refrigerant will be had ap proxniately at the axis of rotation of the rotary compressor, and the reservoir being yassociated with the weight 6d may deliver liquid refrigerant through the duct 52a and the duct 52, thro-ugh connected parts, to the refrigerator B, while lubricant will be delivered from the upper port-ion of the reservoir lll through the duct in the shaft 6 which duct may lead to all bearings of the apparatus not otherwise lubricated. The liquid refrigerant finding its Way along the duct 52 will issue atthe extension 52 into the chamber 52C and from thence into the duct 54 provided interiorly of the shaft l5 and the refrigerant will be conveyed by suchduct 54 to the chamber 56 provided interiorly of the casing 57 into which the duct 54tdischarges, such duct leaving the shaft l5 'and entering the end plate lr6 so that the duct may be carried about the separation means and lead into the chamber 56. ln the rotation of the refrigerator member D, the weight 76 will overcome thekresistance of its spring 77, due to centrifugal action and likewise due to such centrifugal action the liquid refrigerant will seek the peripheral wells of the chamber 56 causing the float M to be moved inwardly or toward the axis of rotation, yand in the inward movement of .such float the needle valve 77 will be actuated through its linlr nwhich is actuated with` its erin T2@ and the float lever T2., and during such operation only such portion of the refrigerant as remains in liquid form willi be able to pass the expansion valve 67 as any refrigerant issuing from the chamber 56 roast issue through. the interspace 78 at The lubricantthe periphery of the circular disk 78 and then through the intere ace 78 to the ducts and through the ori ice 56 which will be uncovered by the valve. rllhi's insures the delivery of liquid refrigerant by the nozzle 64 into the expansion chamber Where suc-h liqquid refrigerant is free to expand and return to the compressor through the. spaces provided between the arms of the spider 7 9 through the interior of the shell 55, and suoli shell 55, including the expansion chainber portion thereof will be maintained at a low temperature due to the expansion of the refrigerant or the conversion thereof from its liquid to its gaseous form. The liquid refrigerant having been expanded into a gas in the expansion chamber 58 and the remaining portions of the conical shell 55, may pass through the orifice in the hub 50a of the member 80 and into the chamber 83 and therethrough to the duct 10fl in the shaft 15 to be therefrom drawn by the rotary condenser compression ineens. Such portion of f the refrigerant as may remain or be in liquid forni within thesliell 55 will be rot-ated by such shell and centrifugally nd its way to the point of the greatest diameter of the shell and such point will be at the gatherer or linger or scoop 8Oe o'f the member 80 and such refrigerant which may be in the forni of an emulsion of refrigerant and lubricat-v ing oil Will be gathered by the finger 80", due to the maintenance of such linger in vertical position by the weight 80b and will be passed through `the duct 80d into the chamber 83 and discharged at the terminus SOf of the duct 80d. Due to the rotation of the plate d6, with other portions of the apparatus, the sulfur-dioxid being, as above stated, considerably heavier th-an the oil or lubricant will be by centrifuga-l action. thrown. outwardly in the chamber 83 while thel oil will in consequence of such centri; fugal action be moved toward the axis of rotation to be returned to the compressor through the duct l0, with refrigerant escaping through the orifice in the extension 8l. rlhe liquid refrigerant in the chamber 83 being disposed in an annular body at the outer walls of such chamber S3' will be picked up bythe lll-shaped tube 82 and `'vill be discharged therethrough into the interior of the shell 55 for further expansion 'therein. Als the expansion chamber 58 is located in the brine tank D, and the flange 92 lre'eps the brine in circulation, such brine will be cooled by the expansion of the liquid refrigerant as it is converted into gaseous form in the expansion chamber in its escape through the nozzle. 6l, The casing 63 being arranged for the entrance of air thereinto around the brine chamber, air will be inducted into such casing over the chilled surface of the brine tanlcand the surface of the shell 55 and such air being cooled by iio contact with the chilled surfaces of the brine tank and the shell 55 will be expelled by the action of the fan blades 22 through the .discharge duct 63 ata suitable point 1n the refrigerator box C. vWhen the rotary parts are at rest, centrifugal action no long er influences the weight 76, its spring will force it inwardly, and the float 7 may likewise move inwardly and the valve 67 will be maintained .in open position, whereby pressure equilibrium is restored throughout the apparatus to permit re-starting of the same, as, it will be understood, that the weight 6d is limited in-its power to maintain the eccentric 6 in vertical position and the compressor could not be started against too great a pressure head. In such case, when the machine is at rest, only refrigerant in gaseous form m-ay flow reversely through the nozzle 64, and past the circular disk 78 and into the condenser A, as the refrigerant remaining in'liq-uid form will seek the then bottom of the chamber 56. During the rotaand will force water through the branched tion of the compressor, the pump 41 will be actuated through the friction disks 42 and 43 duct 44 to the points of discharge of such duct onl the fins or fan blades 31 and 32 where such water will assist the air inducted into thecasing 35 by the fan action in cooling the shell 3 and dissipating the heat of the refrigerant being compressedy by the compressor element. A considerable Iportion of such cooling water will be absorbed by the coolingV air and will carried out through the' discharge pipe 36 thereby, but any water not vaporized or intimately comi mingling with the air will strike the battles the means E.

36a and 36b to vbe returned to the well 37 whereby a constant supply of water is maintained. The action ofthe iloa't 4()a controlling the valve 40 will maintain the water at the proper level in the chamber 38 of It is to be noted that the valve controlling features such as the weight 76 and the float 74 are mounted upon the diaphragm 67, and it is due to the expansion of the liquld refrigerant in the chamber 56 that the di' refrigerant through the ducts 55 of the nozzle 64 according to whether the pressure is greatest in the expansion chamber 60 within theshell 55 4or within 'the chamber 56.

chamber 5 5 of `the rotary condenser and the expansion chamber, respectively, is unique in'that such" shells are constructed of thin spunfor compressed metal,whereas in apparatus of this general nature as heretofore constructed they .have usually been made of cast iron which is porous and much trouble 'portlons to the shaft. The clamp 50 and the retaining rings applied on the shaft over the shells insure great strength in the finished shell and take all strain off the yelded joints. No gaskets are needed for packing purposes.

Having thus disclosed my invention, I claim and desire to secure by Letters Patent:

l. In apparatus of the character described, a rotary condenser including aclosed shell, a compressor cylinder arranged within the shell and rotatable therewith, a piston for said compressor cylinder, means for actuating said piston, a reservoir within the shell, and means for the separation of the lubricant and refrigerating medium, said separation means comprising a plurality of grooved troughs and a gatherer for each of said troughs whereby refrigerant and lubricant centrifugally separated by the rotation of the shell may be withdrawn from the troughs and deposited in the reservoir.

, 2. In apparatus of the character described, a rotary condenser including a closed shell, a compressor mounted within the shell and actuated by the rotation thereof, a stationary reservoirA within the shell, a plurality of grooved troughs extending around the shell and providin for the centrifugal separation of the lu ricantand refrigerating me,

dium, independent atherers extending into the respective troug s, and conduits leading from the gatherers to the reservoir. the conduit for the heavier medium extending downwardly into the reservoir.

3. In apparatus of the character disclosed, a rotary condenser, and a rotary refrigerating unit connected therewith and adapted for rotation in unison therewith; said condenser compl-Ising a compressor cylinder, a piston in said cylinder, means for actuating said piston, a weight for maintaining said actuating means-in operative position, whereby upon rotation of said cylinder said piston is reciprocated therein; and a heat radiating y shell provided with fan blades for creating Theconstruction of the shell 3 and the a circulation for cooling medium over said shell. c

4. In apparatus of the character disc bsed, a rotary condenser, and a rotary refrierating unit connected therewith and adapted for rotation in unison therewith; said condenser comprising a compressorv cylinder, a piston in said cylinder, means for actuating said piston, a weight for maintaining said naipes actuating means in operative position, whereby upon rotation of'said cylinder said piston is reciprocated therein; a heat radiating a rotary condenser, and a rotary refrigerating unit connected .therewith and adapted 'for rotation in unison therewith; said condenser comprising a compressor cylinder,a piston in said cylinder, means Jfor actuating saidpiston, and a weight for maintaining said i5 actuating means in operative position, whereby upon rotation of said cylinder said piston is reciprocatedtherein; there being a heat radiating shell provided with fan blades for creatin a circulation of cooling medium over said shell, a jacket wherein said shell is rotatably mounted; means in said shell for centrifugally separating the lubricant from the refrigerating medium.

6. In apparatus of the character disclosed, a rotary condenser, anda rotary refrigerating unit conne'cted therewith and adapted for rotation in unison therewith; said condenser comprising a compressor cylinder, a piston in said cylinder, means for actuating said piston, and a weight for maintaining said actuating means in operative position,-

whereby upon rotation of said cylinder said piston is reciprocated therein; a heat radiating shell provided with fan blades for creating a circulation of cooling medium over said shell, and a jacket wherein said shell is rotatably mounted; means in said shell for centrifugally separating the lubricant from the `refrigerating medium, and means for depositing centrifugally separated lubricant and refrigerating medium in a reservoir associated with said weight.

7. In apparatus of the character disclosed, a rotary condenser, and a rotary refrigerating unit connected therewith and adapted for rotation in unison therewith; said condenser comprising a compressor cylinder, a piston in said cylinder, means for actuating said piston, and a weight for maintaining said actuating means in operative position, whereby upon rotation of said cylinder said piston is reciprocated therein; a heat radiating shell provided with fan blades for creating a circulation of cooling medium over said shell, and a jacketwherein said shell is rotatably mounted; means in said shell for centrifu ally separatingfthe lubricant from the rerigerating medium, and means for depositing centrifugally separated lubricant and refrigeratingmedium in reservoir associated with said weight; said last named means comprising frefrigerating medium gatherer and a lubricant gatherer.

8. In apparatus of the characterdisclosed,

'aerotar condenser, and a rotary refrigerat- .ing unit connected therewith and a apted n for rotation in'unison therewith; said condenser comprisin a compressor cylinder, a piston in said cy inder, means for actuat# ing .said piston, a weight for maintaining sald actuating means in operative position, whereby upon rotation of said cylinder said piston is reciprocated therein; a heat radiating shell provided with fan blades for creating a circulation of cooling medium over said'shell, and a jacket wherein said shell is rotatablylmounted; means in said shell for centrifugally separating the lubricant from the reirigerating medium, andiineans -for depositing centrifugally separated lubricant and refrigerating medium in a reservoir associated with said weight; said last named means comprising a refrigerating mediuxn atherer and a lubricant gatherer; said lu ricant gatherer and said .refrigerant gatherer being maintained in operative position by said weight.

9. In a rotary condenser, a rotatable casing provided lwith external fan blades, a jacket in which Said casing is rotatably mounted, a compressor cylinder mounted for rotation vwith and disposed in said cas-v ing, a piston for said compressor cylinder, means for actuating said piston, means whereby said piston 'actuating means are maintained in piston actuating position during the rotation of said casing; said last named means including a weight; means for the separation of a refrigerating medium and a, lubricant disposed in said casing; said separation means comprising a plurality of grooved troughs and a gatherer for each of said vtroughs whereby refrigerant and lubricant centrifugally separated in the rotation of sald casing may be withdrawn from said troughs and suitably deposited for reuse.

1.0. In a rotary condenser, a rotatable casing provided with external fan blades, a jacket in which said casing is rotatably mounted, a compressor cylinder mounted for rotation with and disposed in' said casing, a piston for said compressor cylinder, means for actuating said piston, means whereby said piston actuating means are maintained 1n piston actuating position during the ro tation of said casing; said last named means including a Weight; means for the separa-tion of a refrigerating medium and a lubricant disposed in said casing; said separatlon means comprising a plurality of 1 grooved troughs and a. gatherer for each of said troughs whereby refrigerant and lubricant centrifuga-Hy separated in the rotation of said casing may be withdrawn from said troughs and suitably deposited for reuse; said gatherers comprising each a cn- `duit leading to a reservoir;

11. Ina rotary condenser` ay rotatable casing provided with external fan blades, a

jacket in lwhich said casing is rotatably mounted, a compressorcylinder mounted for rotation with and disposed in said casing, a piston for said compressor cylinder,

means for actuatlng sai lpiston, means whereby said piston actuating means are maintained in piston actuating position during ing the rotation of said casing; said last i y named means including a weight; means for the separation of a refrigerating mediuml and a lu'lbricant disposed in.said casing; saidl separation means comprising a plurality of grooved troughs and a'gatherer extending into each of said troughs whereby refrigerby gravitation.

12. In a rotary condenser, a rotatable casing provided with vexternal fan blades, a jacket in which said casing' is rotatably mounted, a .compressor cylinder mounted for rotation with and disposed in said cas- Y ing, a pistonfor said compressor cylinder,

means for .actuating said piston, means whereby said piston actuatmg means are maintained in piston actuating position during the rotationof said casing; said last named means including a weight; means for the separation of a refrigeratin-g medium and a lubricant disposed in 'said casing; s aid separation'means comprisin a plurality of grooved troughs and a gat erer extending into each of said troughs whereby .refrigerant andV lubricant centrifugally separated in the rotation of said casing maybe withdrawn from said troughs and suitably deposi-ted for reuse; said gathererscomprising each a conduit leading to a reservoir wherein further separation of ,refrigerating medium and lubricant may take place by gravitation; said reservoir being associated with said weight.

1-3. A shell of ythe character disclosed,- comprising a plurality of sheet metal members'having abutting welded portions, and .a member clamped over the welded portions to relieve the weld of strain incident to pressure internally of the shell.

14. In an improved joint for a shell and another member, a welded seam, and an annular member applied over said shell to relieve the welded seam of strain incident t0 pressure within the shell, t,

1 5, In a rotary refrigerating apparatus, a rotatable casing having aplurality of eX- pansion chambers formed therein,..tglj"'liquid refrigerant receiving'chamber within one of said expansion chambers, a nozzle extendingfrom 'said liquid refrigerant chamber into the other of said expansion chambers, a

each a conduit leadlng to a reservoir valve to control the discharge of refrigerant through said nozzle, and means for actuating said valve. l ,k

16. In a rotary refrigerating apparatus, a rotatable casing having a plurality of expansion chambers formed therein, a liquid refrigerant receiving chamber within 'uid refrigerant receiving chamber Within lone of said expansion chambers, a nozzle extending from said liquid refrigerant chamber into .the other of said expansion chambers, a valve to control the discharge of refrigerant through said nozzle, and means for actuating said valve; said valve actuatlng means comprising a diaphragm, a'pivoted weight, meansl urging the Weight inwardly of -the liquid refrigerant receivin chamber, and a ioat pivoted in. said 'liqui ref rigerantchamber and connected with said welght and said valve.

18. In a rotary refrigerating apparatus, arotatable casing having a plurality of expansion chambers formed therein, a liquid refrigerant receiving chamber within one of said expansion chambers, a nozzle extending from said liquid refrigerant chamber into the other of said expansion chambers, a valve to lcontrol the discharge of refrigerant through said nozzle, and means forV actuating said valve; said valve""ctuating 105 means comprising a diaphragm, a pivoted weight, means urging the Weight inwardly of the liquid refrigerant receiving chamber, and a ioat pivoted in said liquid refrigerant chamber and connected with said weight and said valve; there being means to permit the passage of only -liquid refrigerant through `sald nozzle durmgthe rotation of said eX- pansion chamber and permitting only the passage of gas through said nozzle while 116 said expansion chamber is stationary.

19, Ina rotary refrigerating apparatus, la rotatable casing having a plurality of eX- pansion chambersformed therein, a liquid refrigerant receiving chamber within one 120 of said expansion chambers, a nozzle extending from said liquid refrigerantrhamber into the other of said-expansion chambers, a valve to control the discharge of refrigerant through said nozzle, and means for actuating said valve; one of said .expansion chambersbeing'disposed in a brine tank.

20. In a rotary refrigerator apparatus, a rotatable casing having an initialzexp'ansion chamber and a secondary expansionvchamsecondary expansion chamber, means to sup- L ply liquid refrigerant to the interior of said refrigerant receiving casing, there being a duct leading-from said casing to said initial expansion chamber, a ,valve to control said duct, means for actuatin said valve,z and separationl means `for liquld refrigerant .and lubricant Within sali chamber. K

21. lIn a rotary refrigerator apparatus, a rotatable casing having an initial expansion chamber and a secondaryl expansion chamberV formed. therein, a brine tank in which said initial expansion` chamf ber is located, a liquid lrefrigerant receiving casing in said expansion chamber, means to supply' liquickrefrigerant to the interior A of said refrigerant'receiving casing, there being a ductfle'ading from said casing to said initial expansion chamber, a valve'to control said duct), means for actuating sald valve, and separation means for' liquid refrigerant and lubricant Within said secondary expansion chamber; said separation means comprising a duct maintained inposition to gather refrigerant deposited against the casing of the expansion chamber and conducting the same to a receiving chamber Where said liquid refrigerant is centrifugally separated from said lubricant and returned to the expansion chamber for further expansion therein.

22. In a rotary refrigerator apparatus, a rotatable casing having an initial expansion chamber and a secondaryeitpansion cham# ber formed therein, a brine tank in 'which said yinitial expansion chamberv islocated, a liquid refrigerant receiving casing in said expansion' chamber, means to supply liquid refrigerant to the interior of said refrigerant receiving casing, there being a duct leading fromsaid casing to said initial expansion chamber, a valve to control said 'duct means for actuating said valve, and' separation means for liquid refrigerant and oil and lubricant Within said secondary eX- pansion chamber; said separation means comprising a duct maintained in ition to gather refrigerant deposited agalnst the casing of the expansion chamber and conducting the same to a receiving chamber Where said liquid refrigerant is centrifugally separated from said lubricant and returned to the expansion .chamber vfor further expansion therein.

l23. In a rotary` refrigerator apparatus, a rotatable casing having an initialexpansion chamber and a secondary expansion chamber formed therein, a brine tank in which 'secondary expansion said initial expansion chamber is located,

a duct maintained in position to gather refrigerant deposited against the casing of the expansion chamber and conducting 'the same v to a receiving chamber Where said liquid refrigerant is centrifugally separated from said lubricant and returned to the eX- pansion chamber for further expansion therein; fan bladesprovided on said rotatable expansion chamber casing, and a jacket for the same through which the circulation of air being cooled is maintained, said jacket partially inclosing said brine tank to chill air drawn into said jacket.

24. In la liquid refrigerant dispensing means, a casing having a diaphragm secured over one of its ends, and having a nozzle at its-other end, a valve for controlling the discharge qf liquid refrigerant through said nozzle, and means for actuat- ,ing said valve; said valve actuating means including said diaphragm, a Hoat, and a Weight adapted to be centrifugally acted upon.

,and a baflie member arranged transversely of said casing whereby, gaseous refrigerant is prevented from escaping through said duct when said casing is rotated about its axis.

name to this specification in the two subscribing Witnesses.

HOWARD H. CARPENTER;

Witnesses Wannv Il. Mannen, CHARLorm LYON.

presence of 25. In a liquid refrigerant dispensing` In testimony whereof, I have signed'my 

